Too many variables, I saw a fox stang on a 100 shot make only 299 RWHP. It went deep 11s at the track the following week. A dyno is a good tuning tool. It is not the supreme standard of the land. The numbers are mostly for bragging rights IMO.
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1972 SS 454 Chevelle LS5/M21/12 bolt 3.73 posi
1969 Malibu COPO L72/M20/12 bolt 3.31 posi
1968 Malibu LQ9/4L80E/12 bolt 3.73 posi
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